The world’s greatest golfer is going to have to spill his guts — in painful, explicit detail — to his beautiful wife, Elin Nordegren, as part of the sexual-addiction treatment that Tiger is undergoing in a Hattiesburg, Miss., facility.

During “family week” of Woods’ scheduled six-week, in-patient stay in the Gentle Path program, Elin will undergo seven full days of counseling with Tiger.

That will include a potentially devastating “Disclosure Day,” when Woods will have to tell Elin just how he betrayed her with each and every one of his sexual conquests, the National Enquirer reported.